Alec Baldwin has reprised in his role as Donald Trump for the latest episode of Saturday Night Live’s Weekend Update, identifying the US president as the true martyr of the tragic Charlottesville rally.

A 12-year-old singing ventriloquist has been awarded US$1 (A$1.3) million prize and her own Las Vegas show after taking the America's Got Talent crown on the season 12 finale of the NBC reality competition.

Xenophon to keep word on backpacker tax

Nick Xenophon says he will keep his word to the government to support its backpacker tax bill but it's the moves of other parties that will determine its fate.

"We have given our undertaking to the government," Mr Xenophon told AAP on Saturday.

Mr Xenophon wants the Murray-Darling Basin plan to get sorted, but clarified that this would not effect his support of the tax on foreign fruit pickers.

"Agreements have been made. We won't breach our agreements."

Uncertainty looms large over the backpacker tax as the government, Labor and crossbenchers remain deadlocked, but there are hopes a resolution may be reached as soon as Monday when parliament resumes.

Crossbenchers and the opposition have left the door open for a compromise on the income tax rate foreign fruit pickers pay that could lie somewhere between the 10.5 per cent the Senate wants and the government's plan for 19 per cent.

One Nation, with four votes that could decide the issue, has signalled support for a rate between 12 and 15 per cent.